- Added KIDS_imshow_settings() to set KIDS specific plotting options.
- Added PS1_imshow_settings() to set PS1 specific plotting options.
- Added support for plotting settings based on survey.
- The KiDS 'chi' images have different units than the PS1
  'chi' images. It should be checked whether this causes problems
  with the modeling.
Added support for plot settings based on survey.
Merge branch 'kidssupport' into develop.
+ Added support to specify plot settings per survey.
+ The sace of the KiDS residual 'chi' images is not in units of sigma.
  It should be checked whether this causes problems with the modeling.